From parade.com
By Beth Ann Mayer
Read this before you blend up your next smoothie
Between the interest in GLP-1s and desire to ward off the dreaded 3 p.m. slump, blood sugar control has become a buzzy word on social media. Keeping blood sugar in check can indeed protect you against type 2 diabetes (or help you manage it if you have it) and keep you from becoming “hangry” and exhausted in the afternoon. However, registered dietitians like Amanda Sauceda, MS, RD, are noticing a rumour: fruits like bananas and strawberries are “bad” for blood sugar. Is that true? Not quite.
“While fruit is a source of natural sugar, like fructose, it won’t have the same effect on your body when compared to eating candy or refined carbohydrates,” Sauceda tells Parade. “Fruit is a mix of natural sugar along with a variety of vitamins and minerals, as well as fibre, which makes it better for your blood sugar.”
But which one is better for blood sugar: strawberries or bananas? After all, different fruits have distinct nutrient profiles, offering benefits to everything from your immune system to your brain health. When it comes to blood sugar, you can start by looking at the glycaemic index (GI).
“The glycaemic index (GI) is a scale that measures how quickly carbohydrate-containing foods raise blood sugar levels compared to glucose, a form of sugar,” says Kara Dawson, RD, the clinical nutrition manager at HonorHealth Four Peaks Medical Center.
Dawson says the scale ranges from 0 to 100, and high-GI foods (70 or above) cause rapid spikes in blood sugar. Low-GI items are digested slowly (55 and below), so blood sugar rises and falls more gradually. Below, registered dietitians will explain whether strawberries or bananas have a lower GI.
However, that’s not all to keep in mind when evaluating a food’s effect on blood sugar. Registered dietitians present their case for the great food fight—strawberries vs. bananas: Which fruit is better for blood sugar?
Bananas vs. Strawberries for Blood Sugar
If managing blood sugar is a concern when you eat, strawberries may support you better than bananas. Here’s why:
- Strawberries are a lower-GI food than bananas. Dawson points out that strawberries have a GI of about 40, which classifies them as a low-glycaemic food. A banana’s GI depends on ripeness, with a medium one coming in at about 42-51. But riper bananas can have a GI of 56-85. “Bananas can cause a slightly quicker rise in blood sugar level, even if you eat the same number of calories of strawberries and bananas,” she says.
- Strawberries have a better fibre-to-total-carb ratio than bananas. Technically, bananas have a little more fibre by weight (about 2.6 grams per 100 grams, compared with about 2 grams per 100 grams in strawberries, reports Dr. Chris Mohr, Ph.D., RD, a fitness and nutrition advisor for Garage Gym Reviews). Fibre slows digestion, helping keep blood sugar from rising too quickly after eating. Yet, the fibre edge somehow goes to strawberries. Here’s why: “Strawberries have much fewer carbs overall, so they give you a good amount of fibre for a lower sugar load,” he adds.
- Strawberries are packed with antioxidants to support blood sugar. Dr. Mohr says that strawberries contain anti-inflammatory properties, including vitamin C and anthocyanins (a plant-based compound). Some research suggests that eating strawberries may reduce blood sugar and insulin response when eaten with a higher-carb meal, but this can vary by person.
Quick note: While strawberries edge out bananas for blood sugar, Dr. Mohr notes that it matters how you consume the strawberries. “The main thing to watch is the form, since jams, syrups, sweetened dried strawberries and desserts with strawberries can have a lot of added sugar,” he says.
Bananas vs. Strawberries for Energy
Bananas have components that make them better than strawberries for a sustainable energy boost. Here are RDs’ reasons:
- A medium banana has double the calories as a cup of strawberries. Despite what diet culture would have us believe, calories are not the enemy. Calories simply measure energy—energy that helps us breathe, think, digest food, tissue repair and so many other vital functions,” says Sharniquia White, MS, a culinary dietitian and the founder of YouNiqly Nourishing LLC. “This could make [bananas] better suited for long day snacks or pre-/post-workout, since they provide more energy.”
- A medium banana boasts more than twice the carbs as one cup of strawberries. Carbs aren’t evil, either. “Carbohydrates are the body’s preferred energy source,” White says. “Carbohydrates get broken down into glucose, which then enters the bloodstream and becomes available for cells to produce energy. The brain, muscles and nervous system all heavily rely on carbohydrates for sustained energy.”
- Bananas are a great source of vitamin B6. Sauceda says vitamin B6 helps “unlock the energy from your food.” “After you eat, your body will break down your food, then start to absorb those nutrients,” she explains. “From there, the body uses vitamins, like B6, to convert the food you eat into a fuel source for your cells.”
- Bananas will net you powerful potassium. Potassium is a vital nutrient for your overall health–energy levels included. “Potassium…helps with processes needed for nerve communication, muscle contractions and each cell’s metabolic processes,” Dawson says.
Bananas vs. Strawberries: Nutrients and Other Health Benefits
What does the actual nutrition breakdown for each fruit look like, anyway? Here’s a glance:
| Strawberries | Bananas | |
| Serving size | 1 cup, whole | 1 medium |
| Calories | 46 calories | 105 calories |
| Total carbohydrates | 11 grams | 27 grams |
| Fibre | 2.9 grams | 3.1 grams |
| Vitamin C | 84.7 mg | 10.3 mg |
| Magnesium | 18.7 mg | 31.9 mg |
| Manganese | 0.6 mg | 0.3 mg |
| Potassium | 220 mg | 422 mg |
| Vitamin B6 | 0.1 mg | 0.4 mg |
| Folate | 34.6 mcg | 23.6 mcg |
It’s worth noting that strawberries and bananas are both so nutrient-dense that they offer benefits beyond blood sugar and energy. “Because strawberries are packed with vitamin C, they can support iron absorption.” White states. “They are super supportive of hydration, due to their high water content.”
Sauceda says bananas are also a win for gut health. “The resistant starch in green bananas can also act as a prebiotic, which means it can benefit your gut. Prebiotics help to feed your good gut bacteria, which encourages a healthy microbiome.”
https://parade.com/health/strawberries-vs-bananas-for-blood-sugar


